<template>
  <div>
    <!-- 顶部面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 顶部搜索区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 商品数据表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="goods_name" label="商品名称"></el-table-column>
        <el-table-column prop="goods_price" label="商品价格(元)" width="70px"></el-table-column>
        <el-table-column prop="goods_weight" label="商品重量" width="70px"></el-table-column>
        <el-table-column prop="add_time" label="创建时间" width="170px">
          <template slot-scope="scope">{{scope.row.add_time | dateFormat}}</template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button icon="el-icon-edit" size="mini" type="primary"></el-button>
            <el-button
              icon="el-icon-delete"
              size="mini"
              type="danger"
              @click="delGoods(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[2, 5, 8, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //请求服务器商品数据发送的参数对象
      queryInfo: {
        //查询参数
        query: "",
        //当前页码
        pagenum: 1,
        //每页显示条数
        pagesize: 10
      },
      //接收服务器会返回放商品数据的数组
      goodsList: [],
      //接收服务器返回的商品总数
      total: 0
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    //获取商品数据
    async getGoodsList() {
      const { data: res } = await this.$http.get("goods", {
        params: this.queryInfo
      });
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg);
      }
      this.goodsList = res.data.goods;
      this.total = res.data.total;
      //   console.log(this.goodsList);
      //   console.log(this.total);
    },
    //每页条数改变触发的函数
    handleSizeChange(val) {
      this.queryInfo.pagesize = val;
      this.getGoodsList();
    },
    //当前页码改变触发的函数
    handleCurrentChange(val) {
      this.queryInfo.pagenum = val;
      this.getGoodsList();
    },
    //删除商品
    async delGoods(id) {
      //1.官方写法
      //   this.$confirm("此操作将永久删除该商品, 是否继续?", "提示", {
      //     confirmButtonText: "确定",
      //     cancelButtonText: "取消",
      //     type: "warning"
      //   })
      //     .then(async () => {
      //       const {data: res} = await this.$http.delete(`goods/`+id)
      //       if(res.meta.status !== 200){
      //           return this.$message.error(res.meta.msg)
      //       }
      //       this.$message.success(res.meta.msg)
      //       this.getGoodsList()
      //     })
      //     .catch(() => {
      //       this.$message({
      //         type: "info",
      //         message: "已取消删除"
      //       });
      //     });
      //2.async await写法
      const confirm = await this.$confirm(
        "此操作将永久删除该商品, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);
      //如果用户点击了取消
      if (confirm !== "confirm") {
        return this.$message.info("删除取消");
      }
      //用户点击了确定，向服务器发送请求
      const { data: res } = await this.$http.delete(`goods/` + id);
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg);
      }
      this.$message.success(res.meta.msg);
      this.getGoodsList();
    },
    //点击添加按钮 跳转到添加商品页面
    goAddPage(){
        this.$router.push('/goods/add')
    }
  }
};
</script>

<style lang="less" scoped>
</style>